<template>
  <el-container class="home-container">
    <!-- 头部 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="">
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside width="200px" :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toogleCollapse">|||</div>
        <el-menu background-color="#333744" text-color="#fff" active-text-color="#409eff" unique-opened :collapse="isCollapse"
          :collapse-transition="false" router :default-active="activePath">

          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <!-- 一级菜单的模版区域 -->
            <template slot="title">
              <!-- 图标 -->
              <i :class="iconsObj[item.id]"></i>
              <!-- 文本 -->
              <span>{{item.authName}}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <!-- 一级菜单的模版区域 -->
              <template slot="title">
                <!-- 图标 -->
                <i class="el-icon-menu"></i>
                <!-- 文本 -->
                <span>{{subItem.authName}}</span>
              </template></el-menu-item>
          </el-submenu>

        </el-menu>

      </el-aside>
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>

</template>

<script>
  export default {
    data() {
      return {
        //左侧菜单数据
        menulist: [],
        iconsObj: {
          '125': 'iconfont icon-user',
          '103': 'iconfont icon-tijikongjian',
          '101': 'iconfont icon-shangpin',
          '102': 'iconfont icon-danju',
          '145': 'iconfont icon-baobiao',
        },
        isCollapse: false,
        activePath: ''
      }
    },
    created() {
      this.getMenuList()
      this.activePath=window.sessionStorage.getItem('activePath')
    },
    methods: {
      logout() {
        window.sessionStorage.clear()
        this.$router.push('/login')
      },
      //获取所有菜单
      async getMenuList() {
        const {
          data: res
        } = await this.$http.get('menus')
        // console.log(res)
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
        this.menulist = res.data
      },
      //点击按钮，展开或关闭侧边栏
      toogleCollapse() {
        this.isCollapse = !this.isCollapse
      },
      saveNavState(activePath) {
        window.sessionStorage.setItem('activePath', activePath)
        this.activePath=activePath
      }
    }
  }
</script>

<style lang="less" scoped>
  .el-header {
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: white;
    font-size: 20px;

    div {
      display: flex;
      align-items: center;

      span {
        margin-left: 15px;
      }
    }

  }

  .el-aside {
    background-color: #333744;

    .el-menu {
      border-right: none;
    }

    ;

    .toggle-button {
      background-color: #4a5064;
      font-size: 10px;
      line-height: 24px;
      color: #fff;
      text-align: center;
      cursor: pointer;
    }
  }

  .el-main {
    background-color: #eaedf1
  }

  .home-container {
    height: 100%;
  }

  .iconfont {
    margin-right: 6px;
  }
</style>
